function Search() {
	var sch=$('#sch').val();
	/*alert(sch);*/
	var ph=$('#sch').attr('placeholder');
	if (sch=='' ) {
		$('#sch').focus();
		$('#sch').attr('placeholder','请输入搜索内容!');	
	}else{
	     
		window.location.href='http://localhost:8080/PikaV/user/findVideo?videoName='+sch;
	/*	$.ajax({

			cache:false,

			type:"post",

			url:"http://localhost:8080/PikaV/user/findVideo",

			data:{"videoName":sch},

			async:false,

			//traditional:true,

			error: function (request) {

				//alert("Connection error");

			},

			success:function(data){

				alert("successful!");

			}

		    

		});*/
	}

}